Tool setting gauge



Feb. 2, 1954 K. F. ZUMKELLER TOOL SETTING GAUGE Filed June 28, 1952 IVVENTOP,

KARL F ZUMKELLEP, 15v

' r QT' TORNE Y.

Patented Feb. 2, 1954 ,7 2,667,703

UNITED STATES PATENT OFFICE 2,667,703 I TOOL SETTING GAUGE Karl F. Zumkeller, Indianapolis, Ind. Application June 28, 1952, Serial No. 296,121 1 Claim. (01. 33185) This invention relates to a gage for quickly pressure exerted thereagainst by means of a setting tools for the proper height in relation to closure screw 2! screW-threadedly entered in the the work to be operated upon. It is usable for outer end portion of the bore ll.

all lathe tools, such as in turning operations, The tube It carries a pair of indicating lines right hand, left hand, straight, facing, cut oil, 5 22 and 23 defining the outer end limits of a and in boring operations and also for both inbubble 24 when the face It is exactly horizontally ternal and external threading. positioned.

Heretofore in the machine shop it has taken The body it is provided with a cut away notch some little time to set up properly a tool in re- 25 thereacross, this notch extending downwardly lation to the work whereby the cutting edge or of the body Hi to open into the bore IT. This point of the tool is at the proper elevation in renotch 25 is located along the body It) so that the p t to the ho nt p e r u h the axis bubble 2 3 will be approximately centered therein. of rotation of the work. A generally T-shaped, tool contact plate 26 In most instances, the cutting edge of the tool is placed on the face l3 and secured rigidly is to be set in the horizontal plane through the thereover. The plate 26 has a stem portion 21 upon the specific materials being turned. My of the body it, the under faces of these wings 28 art in the following description of one particuedges and 3! of the membe1s 28 and 29 are in lar form of the invention as illustrated in the a common vertical plane.

accompanying drawing, in which: In using the gage, the jaws II and I2 are Fig. 1 is a, view in top plan of a structure em- 30 brought up into tangential contact with a work bodying the invention; piece 32, Figs. 4 and 5, and a cutting tool 33 is Fig. 2 is a view in work side end elevation; brought up into close proximity with the work Fig. 3 is a view in outer end elevation; piece 32. The gage is then rocked circumferen- Fig. 4 is a view in side elevation and partial tially around the work piece 32 until the bubble section of the structure as applied to a cylindri- 35 24 comes between the lines 22 and 23 to indicate cal piece of work; and that the face I3 is in a horizontal plane, this Fig. 5 is a view in side elevation of the device plane being continued, intersecting the central indicating relative positions of the tool and the axisof the work piece 32. Also, the under sides rk, of the wings 28 and 29 of the plate 26 are like- The gage comprises essentially a body In from wise in the same plane. The tool 33 is then adthe angle between the jaws l l and I2. eating position. This will give a setting of the That is the body [0 lies below the plane defined tool 33 for having its cutting edge or point 34 in by the face l3. Both jaws II and I2 are provided the plane horizontally through the axis of the with planar faces l5 and 16 each in a plane work 32. That is all there is to the setting of intersecting with the other on the line M. the cutting tool.

The body I 0 is provided with a bore I! whose It is to be noted that in this method of adaxis is parallel with the face I3. Within the justing the cutting tool 33, the cutting edge or bore I? there is fitted a level tube l8, adjustably point 34 is brought up to within very close proxfitted therein by means of a resilient packing l9 imity with the work piece 32 so that there is at the inner end, and resilient packing 20 at the the minimum chance of introducing errors in the outer end of the tube I 8, the packing 20 having setting of the elevation of the tool 33 as compared to other devices heretofore employed where the cutting edge or point 34 has to be positioned at a distance much greater from the face of the work piece 32. Additional outer lines 35 and 36 may be provided on the tube l8 to determine limits of the travel of the bubble 24 for any desired positioning of the tool cutting edge or point 34 above or below the horizontal plane.

Thus it is to be seen that I have provided a yet; extremely rapid means in determining the elevation of a cutt ng tool in reference to the work upon which it is to operate. While 1 have structure in the one particular vious that parting from the spirit of the invention, and-I therefore do not desire to be limitedto thatprealso form beyond the limitations which may be imposed by the following claim.

I claim:

Alathe cutting in-reference-to theaxis of a piece of :work; comprising a body; apair of jaws carried by the and presenting, planar, forwardfaces ninety degrees apart, the lengthsof the jaw faces being sufficient to ,have'their faces tangent to the work form, it is obpiece when presented thereagainst; a tool cutting;

herein shown the variations may be made without de toolgage for tool height setting body,

edge contact member carried by and extending laterally from said body and having an under side planar face starting at least at the line of intersection of said jaw faces and bisecting the dihedral angle of those jaw faces; a bubble indicating level tube carried by said body having its upper side in close proximity to but below the plane of said member face; the positioning of said bubble along said tube for horizontal placement of said member face being on that side of said member removed from said line of intersection.

KARL F. ZUMELLER;

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,224,836 Blainer May 1, 1917 2472241 Wilson June 7, 1949 FOREIGN PATENTS Number Country: Date 5 252,378 Switzerland Aug. l6, 1948 OTHER REFERENCES Popular Science, page 8.4, April 1934; 

